Williams Tools 1234SC Chrome Plated Combination Wrench Set - 1-1/16 Inch Box & Open End, 14-3/4 Inch Length - Imperial Size for Automotive Repair, Plumbing & DIY Projects

Open end has specially designed grooves that direct wrench force away from fastener cornersBox opening design allows application of higher torque without rounding or deforming hex fastener pointsNo contact is made at the corners—instead, wrenching forces are placed on the flat surfaces behind the pointsMay be used on all common hex (6 point) fasteners with considerable advantage over conventional box end wrenches to increase both hand tool flexibility and economyBox and open end openings are identicalMeets or exceeds aerospace specification AS 954 for 12 point fasteners (as defined by AS 870) to provide accurate torque/tension relationship for precision applicationSpecification: Box end wrench size: 1-1/16 in socket shape: 12 PTOpen end wrench size: 1-1/16 in box end head width: 1-9/16 inOverall length: 14-3/4 in open end head width: 2-1/4 inMeasurement system: ImperialBox end head thickness: 21/32 inHead angle: OffsetOpen end head thickness: 1/2 inFinish/coating: Chrome

Box end wrench size: 1-1/16 in

socket shape: 12 PT

Open end wrench size: 1-1/16 in

box end head width: 1-9/16 in

Overall length: 14-3/4 in